Remove use of deprecated MessageLoop methods in chrome/.

chrome/browser/chromeos/first_run/first_run_controller.cc

Index: chrome/browser/chromeos/first_run/first_run_controller.cc
diff --git a/chrome/browser/chromeos/first_run/first_run_controller.cc b/chrome/browser/chromeos/first_run/first_run_controller.cc
index bb44a54e232eeedd7715173255d29f8267d1f11c..69a29b0d3025ae0fe3c7ec9951d4d84a88b3d228 100644
--- a/chrome/browser/chromeos/first_run/first_run_controller.cc
+++ b/chrome/browser/chromeos/first_run/first_run_controller.cc
@@ -5,9 +5,11 @@
 #include "chrome/browser/chromeos/first_run/first_run_controller.h"
 
 #include "ash/shell.h"
+#include "base/location.h"
 #include "base/logging.h"
-#include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/chromeos/first_run/first_run_view.h"
 #include "chrome/browser/chromeos/first_run/metrics.h"
 #include "chrome/browser/chromeos/first_run/steps/app_list_step.h"
@@ -55,7 +57,7 @@ void FirstRunController::Stop() {
     return;
   }
   g_instance->Finalize();
-  base::MessageLoop::current()->DeleteSoon(FROM_HERE, g_instance);
+  base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, g_instance);
   g_instance = NULL;
 }